Our little cabin at the beach was small, maybe 400 or 500 square feet. The living area and the bathroom were quite comfortable, but the cooking area was really tricky to get along in. Well, of course it was fine for a couple of days, but I don't think I could make it work for longer than that.
But the house in this video is less than 100 square feet! It's very efficient and seems to work well for him.
What about you? Could you manage in a place this small?